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Proceedings Paper

Effect of deadtime in imaging detectors
Author(s): Abhay Sharma; John G. Walker
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Paper Abstract

The first and second order statistics in a deadtime affected photo counting distribution are analysed. The reduced mean count rate is modeled for paralyzable and nonparalyzable deadtime in a two-dimensional imaging array. In certain limits the derived expressions are shown to agree with previously published results for single element detectors. A simulation is used to demonstrate the effect deadtime has on the speckle contrast and the speckle peak in the autocorrelation function of static laser speckle. The theoretical approach necessary to describe this behavior is also presented.

Paper Details

Date Published: 1 July 1990
PDF: 12 pages
Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990); doi: 10.1117/12.19112
Show Author Affiliations
Abhay Sharma, King's College London (United Kingdom)
John G. Walker, King's College London (United Kingdom)


Published in SPIE Proceedings Vol. 1235:
Instrumentation in Astronomy VII
David L. Crawford, Editor(s)

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